Angelo Cirasino

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Grossa palla di fuoco sui cieli del centro/sud: migliaia di segnalazioni. E' stato un meteoroide

Grande spettacolo sui cieli del centro/sud e nella zona del mar Tirreno dove ieri sera intorno alle 19:00 una luminosa palla di fuoco è stata …

Riflessioni Venezia - VENICE Reflections - by Ross CARE

La (mia prima) Via Lattea

Flamenco Sketches

Blast-off..

Via lattea

quiet lake

A reason to run

La splendida cometa C/2013 R1 Lovejoy visibile prima dell'alba nel cielo orientale

Le potenzialità della cometa <b>ISON</b> stanno quasi eclissando un’altra cometa molto importante che brilla di un ordine di grandezza in meno: la <b>cometa</b> …

Giovani stelle creano spettacolari sculture

Coi loro venti disegnano archi e colonne<p>Giovani stelle creano un panorama spettacolare in un ammasso stellare: bolle, archi e colonne scolpiti dai …

NEBULOSE TESTA DI CAVALLO E FIAMMA

Piccolo e Grande carro ... con stella cadente

Le 10 migliori località da cui osservare le stelle: i cieli, e gli osservatori astronomici, più belli del mondo -> http://bit.ly/PXTI3J

La NASA ha confermato che il nostro sistema solare si trova all'interno di una bolla di gas prodotta 10 milioni di annidi anni fa da esplosioni di supernove.

Tonight's Sky: November 2014

Aumenta l'attività (e l'odore) della cometa 67P http://bit.ly/1wvAAuK Mancano poco meno di 3 settimane dalla storica impresa del lander Philae e la cometa 67P/Churyumov-Gerasimenko mostra un graduale ma chiaro aumento della luminosità. Le recenti immagini della Navigation Camera (NavCam - vedi in fondo al post) stanno mostrando nuovi incredibili dettagli della superficie della cometa ma ieri l'ESA ha rilasciato alcune foto dell'Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) che, grazie alla sua maggiore risoluzione, è riuscito a cogliere le sorprendenti sfumature della debole atmosfera che si sta creando intorno al nucleo.

Il cielo di novembre 2014

ALMA svela la genesi dei pianeti http://bit.ly/1uCq85u Durante una fase di test per verificare le nuove capacità ad alta risoluzione, ALMA (Atacama Large Millimeter/submillimeter Array) ha catturato la migliore foto ottenuta finora di un sistema proto-planetario. Questa incredibile e sorprendente immagine mostra dettagliatamente il disco di polveri che circonda HL Tau, una stella simile al Sole che si trova a circa 450 anni luce dalla Terra nella costellazione del Toro.

L’ESO fotografa il Pozzo dei desideri

L’Osservatorio dell’ESO di La Silla in Cile ha ottenuto questa veduta del brillante ammasso stellare NGC 3532. Alcune delle sue stelle sono …

L'ammasso NGC 3532 è un pozzo dei desideri

This slightly warped dwarf galaxy is a sweet spectacle! The galaxy cutting dramatically across the frame of this NASA/ESA Hubble Space Telescope image is a slightly warped dwarf galaxy known as UGC1281. Seen here from an edge-on perspective, this galaxy lies roughly 18 million light-years away in the constellation of Triangulum (The Triangle). The bright companion to the lower left of UGC 1281 is the small galaxy PGC 6700, officially known as 2MASX J01493473+3234464. Other prominent stars belonging to our own galaxy, the Milky Way, and more distant galaxies can be seen scattered throughout the sky. The side-on view we have of UGC 1281 makes it a perfect candidate for studies into how gas is distributed within galactic halos — the roughly spherical regions of diffuse gas extending outwards from a galaxy’s center. Astronomers have studied this galaxy to see how its gas vertically extends out from its central plane, and found it to be a quite typical dwarf galaxy. However, it does have a slightly warped shape to its outer edges, and is forming stars at a particularly low rate. Credit: ESA/NASA, Acknowledgement Luca Limatola #nasagoddard #Hubble #space #galaxy

La gemma azzurra di Orione

La stella Rigel e, sulla sinistra, il curioso profilo della nebulosa IC 2118, non a caso ribattezzata Nebulosa Testa di Strega. Crediti: Rogelio …

A Hubble View of All That Glitters This striking NASA/ESA Hubble Space Telescope image shows a glittering bauble named Messier 92. Located in the northern constellation of Hercules, this globular cluster — a ball of stars that orbits a galactic core like a satellite — was first discovered by astronomer Johann Elert Bode in 1777. Messier 92 is one of the brightest globular clusters in the Milky Way, and is visible to the naked eye under good observing conditions. It is very tightly packed with stars, containing some 330,000 stars in total. As is characteristic of globular clusters, the predominant elements within Messier 92 are hydrogen and helium, with only traces of others. It is actually what is known as an Oosterhoff type II (OoII) globular cluster, meaning that it belongs to a group of metal-poor clusters — to astronomers, metals are all elements heavier than hydrogen and helium. By exploring the composition of globulars like Messier 92, astronomers can figure out the age of these clusters. As well as being bright, Messier 92 is also old, being one of the oldest star clusters in the Milky Way, with an age almost the same as the age of the Universe. Credit: ESA/Hubble & NASA Acknowledgement: Gilles Chapdelaine #nasagoddard #space #Hubble

Messier 47 è sempre più blu

L’ammasso stellare Messier 47: l’immagine è stata ottenuta con la camera WFI (Wide Field Imager) installata sul telescopio da 2,2 metri dell’MPG/ESO …

Stelle della stessa età in compagnia

Questo ammasso stellare si chiama, in gergo tecnico, NGC 1651 e si trova nella Grande Nube di Magellano. All’interno i ricercatori hanno trovato …

La fabbrica di stelle che non va mai in ferie

Crediti: ESA/Hubble & NASA Acknowledgement: Nick Rose<p>Quale modo migliore per prepararci alle feste natalizie di una bella immagine proveniente dallo …

Hubble sees a galaxy 60 million light-years away This new NASA/ESA Hubble Space Telescope image shows the galaxy IC 335 in front of a backdrop of distant galaxies. IC 335 is part of a galaxy group containing three other galaxies, and located in the Fornax Galaxy Cluster 60 million light-years away. As seen in this image, the disk of IC 335 appears edge-on from the vantage point of Earth. This makes it harder for astronomers to classify it, as most of the characteristics of a galaxy’s morphology — the arms of a spiral or the bar across the center — are only visible on its face. Still, the 45 000 light-year-long galaxy could be classified as an S0 type. These lenticular galaxies are an intermediate state in galaxy morphological classification schemes between true spiral and elliptical galaxies. They have a thin stellar disk and a bulge, like spiral galaxies, but in contrast to typical spiral galaxies they have used up most of the interstellar medium. Only a few new stars can be created out of the material that is left and the star formation rate is very low. Hence, the population of stars in S0 galaxies consists mainly of aging stars, very similar to the star population in elliptical galaxies. Credit: ESA/Hubble and NASA #nasagoddard #hubble #galaxy #space

Hubble Sees an Ancient Globular Cluster 22,000 Light-years Away This image captures the stunning NGC 6535, a globular cluster 22,000 light-years away in the constellation of Serpens (The Serpent) that measures one light-year across. Globular clusters are tightly bound groups of stars which orbit galaxies. The large mass in the rich stellar centre of the globular cluster pulls the stars inward to form a ball of stars. The word globulus, from which these clusters take their name, is Latin for small sphere. Globular clusters are generally very ancient objects formed around the same time as their host galaxy. To date, no new star formation has been observed within a globular cluster, which explains the abundance of aging yellow stars in this image, most of them containing very few heavy elements. NGC 6535 was first discovered in 1852 by English astronomer John Russell Hind. The cluster would have appeared to Hind as a small, faint smudge through his telescope. Now, over 160 years later, instruments like the Advanced Camera for Surveys (ACS) and Wide Field Camera 3 (WFC3) on the NASA/ European Space Agency (ESA) Hubble Space Telescope allow us to marvel at the cluster and its contents in greater detail. Credit: ESA/Hubble & NASA, Acknowledgement: Gilles Chapdelaine #nasagoddard #hubble #space #galaxy